42870456 has 48 divisors (see below), whose sum is σ = 117592800. Its totient is φ = 14107392.

The previous prime is 42870449. The next prime is 42870493. The reversal of 42870456 is 65407824.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 42870456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1920 + ... + 9456.

It is an arithmetic number, because the mean of its divisors is an integer number (2449850).

Almost surely, 2^42870456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42870456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58796400).

42870456 is an abundant number, since it is smaller than the sum of its proper divisors (74722344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42870456 is a wasteful number, since it uses less digits than its factorization.

42870456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7628 (or 7621 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 42870456 is about 6547.5534362081. The cubic root of 42870456 is about 349.9876349373.

The spelling of 42870456 in words is "forty-two million, eight hundred seventy thousand, four hundred fifty-six".